CN101865000A - Combined power augmentation system and method - Google Patents
Combined power augmentation system and method Download PDFInfo
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- CN101865000A CN101865000A CN201010005132A CN201010005132A CN101865000A CN 101865000 A CN101865000 A CN 101865000A CN 201010005132 A CN201010005132 A CN 201010005132A CN 201010005132 A CN201010005132 A CN 201010005132A CN 101865000 A CN101865000 A CN 101865000A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas- turbine plants for special use
- F02C6/18—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas- turbine plants for special use using the waste heat of gas-turbine plants outside the plants themselves, e.g. gas-turbine power heat plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
- F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
- F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas- turbine plants for special use
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/40—Use of a multiplicity of similar components
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
Abstract
The invention relates to a combined power augmentation system and method. An electrical generation system including a first gas turbine and a a heat recovery steam generator coupled to the gas turbine and including a low pressure super-heater having a low pressure super-heater output. The electrical generation system also includes a second gas turbine, an output duct coupled to the second gas turbine and a supplemental low pressure super-heater within the output duct and thermally coupled to the low pressure super-heater output.
Description
Technical field
Theme of the present disclosure relates to production electric power, especially relates to during peak requirements producing electric power by utilizing the heat extraction of peaking circuit to reclaim.
Background technique
Base lotus (also claim base load, or baseload demand) is the minimum power amount that a public power or power distribution company must provide to its client, or needs to satisfy the electric power amount based on the Minimum requirements of the reasonable expectation of customer requirement.In most of commercial districts and industrial region, basic lotus value changes along with the time usually.Lotus is produced by so-called " basic lotus power station " base.
The peak of client's electricity needs or peak are handled by power station more small-sized and more multiple response type, and it is called as the peaking power station.Certainly, basic lotus power station can be positioned at a place with the peaking power station.The time of peaking power station operation can be individual more than a day hour or have only several hrs every year, and this depends on the situation of the electrical network of this area.Set up efficiently that the power station is expensive, therefore,, so, make it and base load power station equally efficiently may not have economic implications if the time of short-term or alterable height only will be moved in the peaking power station.In addition, equipment that uses in the base load power station and fuel are not suitable for using in the peaking power station usually, because the fluctuation situation will seriously be damaged equipment.Owing to these reasons, the power station of nuclear energy, geothermal power, refuse energy, coal and biomass energy is seldom as the operation of peaking power station, if any.
The peaking power station is generally the combustion gas turbine of gas-firing.Some combustion gas turbine Combustion Source are from the liquid of oil, for example diesel oil and Aviation Fuel, but it is more expensive than rock gas usually, so its use is restricted.
In order to raise the efficiency, add heat recovery steam-driven generator (HRSG) in exhaust place.This is as combined-cycle power generation plant and known.Combined heat and power uses the refuse heat extraction, to be used for processing or other heating purposes.These two selections are only used in the operation power station more over a long time than usual in intention.
In the past,, use different technologies, satisfied the peak load requirement according to endurance and maximum power requirement.Some have below been described.
An existing scheme is the scheme of so-called " pipeline burning ".At the peak load run duration, in the exhaust chimney of the upstream of heat recovery steam-driven generator (HRSG), the extra fuel that burns, to produce extra heat, the electric power output that in bottom cycle, produces extra vapor stream thus and accompany.Exhaust is an oxygen depletion, and therefore, it is not efficient to burn.Further non-homogeneous temperature distribution may cause the life-span of HRSG pipe to reduce.In addition, turbo machine operates in the situation of " non-design " a little, thereby causes more stream at the peak load run duration, makes normal combined cycle mode operation poor efficiency and low producing.
Another scheme relates to utilizes a kind of simple cycle combustion gas turbine.For the application of the remarkable peak load after over a long time of needs, use combustion gas turbine based on the simple cycle of replenishing.Must lack the starting time of this turbo machine, and scope is 7-10 minute, and this is an important designing requirement.This type systematic can run on the power output of for example about 37% operational efficiency and 175MW.Yet this system is because the heat that does not reclaim in its exhaust may have low peak load efficient.In addition, these systems may need costliness and not too reliable high-temperature selective catalytic reduction (SCR) catalyzer, to reduce the generation of peaking circuit NOx.In addition, the ventilating fan that is used for high temperature SCR is very expensive, and himself requires high auxiliary demand power consumption.If use the ammonia ejecting system in the peaking system, so, the outside moving part that is used for the ammonia ejecting system is very high.
Summary of the invention
According to an aspect of the present invention, provide a kind of power generation system.This system comprises first combustion gas turbine and is connected to the heat recovery steam-driven generator of combustion gas turbine.The heat recovery steam-driven generator comprises the high-pressure superheater with high pressure superheater output.This system also comprises second combustion gas turbine and is connected to the output pipeline of second combustion gas turbine.This system also comprises and replenishes high-pressure superheater and thermoregulator, and this additional high-pressure superheater is arranged in output pipeline, and heat is connected to high pressure superheater output, and this thermoregulator is connected in high pressure superheater output and replenishes between the high-pressure superheater.
According to an aspect of the present invention, provide a kind of power generation system.The system of this respect comprises combined cycle and peaking circulation.Combined cycle comprises combustion gas turbine and is connected to the heat recovery steam-driven generator of combustion gas turbine.The heat recovery steam-driven generator comprises the middle pressure superheater of pressing heat output in having and has the low-pressure superheater of low area overheat output.This peaking follows the output pipeline that rascal is drawn together the peaking combustion gas turbine and is connected to the peaking combustion gas turbine.Peaking circulation also comprises presses superheater and additional low-pressure superheater in replenishing, and presses superheater to be arranged in output pipeline during this replenishes and heat is connected to high pressure superheater output, and this additional low-pressure superheater is arranged in output pipeline and heat is connected to low area overheat output.
According to another aspect of the present invention, a kind of method that is used for operational system comprises combined cycle and peaking circulation, combined cycle comprises combustion gas turbine and is connected to the heat recovery steam-driven generator of combustion gas turbine that the peaking circulation comprises peaking combustion gas turbine and output pipeline.This method comprises: in the heat recovery steam-driven generator, make high pressure output product overheated; After the output product is overheated in the heat recovery steam-driven generator, before the output product is provided to another turbo machine, in the additional high-pressure heater in output pipeline, make the output product overheated; And before the output product is overheated in additional high-pressure superheater, in thermoregulator, will exports product and mix with water.
By the description below in conjunction with accompanying drawing, it is clearer that advantage of these and other and feature will become.
Description of drawings
It is highlighted and clearly advocated in claims to be considered to this theme of inventing.Above-mentioned and other feature and advantage of the present invention become clear by the detailed description below in conjunction with accompanying drawing, wherein:
Fig. 1 is the system block diagram of power generation system;
Fig. 2 be shown in Figure 1 comprise thermoregulator the system block diagram of system;
Fig. 3 is the system block diagram of power generation system according to another embodiment of the present invention; And
Fig. 4 is the system block diagram of power generation system according to another embodiment of the present invention.
By the example of reference accompanying drawing, embodiments of the invention and advantage and feature have been explained in detailed description.
List of parts
100 power generation systems
102 combined cycle
104 peaking circulation
106 compressors
107 suction ports
108 burners
108 compressors
110 combustion gas turbines
112 outputs
114?HSRG
116 high-pressure superheaters
Press superheater in 118
120 exhaust ducts
124 low-temperature SCRs
126 chimneys
130 combustion gas turbines
132 peaking compressors
134 peaking burners
140 peaking exhausts
142 peaking exhaust ducts
136 low pressure are replenished superheater
138 peaking low-temperature SCRs
142 peaking HSRG
144 dotted arrows
200 power generation systems
202 low pressure current
204 water pumps
206 low pressure steam thermoregulators
300 systems
302 peaking circulation
304 burners
306 combustion gas turbines
308 output pipelines
314?SCR
310 low-pressure superheaters
312 replenish high-pressure superheater
316 low-pressure superheaters
320 compressors
321 suction ports
322 burners
324 combustion gas turbines
326 high-pressure steam turbine machines
328 pressure steam turbine
330?HSRG
318 high-pressure superheaters
The pre-thermoregulator of 332 high pressure
The pre-thermoregulator of 334 low pressure
338 second pumps
339 the 3rd pumps
340 high pressure/medium pressure steam turbo machine
342 pressure steam turbine
344 condensers
336 pumps
338 pumps
339 pumps
400 systems
402 peaking circulation
403 compressors
404 burners
406 combustion gas turbines
408 output pipelines
414?SCR
410 replenish low-pressure superheater
412 replenish the middle superheater of pressing
416 low-pressure superheaters
Press superheater in 418
420 compressors
421 suction ports
422 burners
424 combustion gas turbines
426 medium pressure steam turbo machines
428 pressure steam turbine
430?HSRG
Press pre-thermoregulator in 432
436 first pumps
The pre-thermoregulator of 434 low pressure
438 second pumps
439 the 3rd pumps
440 medium pressure steam turbo machines
442 pressure steam turbine
444 condensers
Embodiment
Fig. 1 has shown the example of power generation system 100 according to an embodiment of the invention.System 100 comprises combined cycle 102 and peaking circulation 104.
Combined cycle 102 can comprise compressor 106, and this compressor comprises suction port 107.Compressor 106 is connected on the burner 108, combustion gas or fuel oil in this burner combustion pressurized air stream.Compressor 108 is connected on the combustion gas turbine 110.Combustion gas turbine 110 extracts energy from the hot air flow that burning produced of combustion gas or fuel.In one embodiment, the energy of extraction is converted into electric energy.
The output 112 of combustion gas turbine 110 is exhausts, and this exhaust can be used in other circulations of association system 100.Can use exhaust, for example, be used for the steam (not shown) of steam turbine with heating.Therefore, combined cycle comprises HSRG 114.HSRG 114 can comprise high-pressure superheater 116, middle pressure superheater 118 and low-pressure superheater 120.HSRG 114 can include only any combination of low-pressure superheater 120 or low-pressure superheater 120 and another superheater.
Exhaust can be under about 1150 temperature.Finally, exhaust is processed in exhaust duct 120, and this exhaust duct comprises low-temperature SCR 124, and before exhaust discharged by chimney 126, this low-temperature SCR was handled exhaust.
As mentioned above, system 100 also comprises peaking circulation 104.Yet in the prior art, this system has low peak load efficient.A reason of this poor efficiency may be owing in the peaking circulation, do not reclaim heat from exhaust.In addition, these systems need utilize not too reliable and expensive high temperature SCR catalyzer and exhaust are cooled to the extra expensive external refrigeration fan of high temperature SCR level.In addition, this system need be used for the outside moving part of ammonia ejecting system usually, to move high temperature SCR effectively.
Peaking circulation 104 comprises peaking combustion gas turbine 130.Peaking combustion gas turbine 130 is connected to peaking compressor 132 by peaking burner 134.The output temperature of peaking exhaust 140 is approximately 1150 °F, and by peaking exhaust duct 142.Peaking exhaust duct 142 comprises additional superheater 136 of low pressure and peaking low-temperature SCR 138.Certainly, peaking HSRG 142 can be connected on the chimney 126.
The output of low-pressure superheater 114 is connected to the input that replenishes low-pressure superheater 136.The input of low-pressure superheater can be connected on the low-pressure condenser (not shown).
The temperature of the output product (being generally steam) of low-pressure superheater 114 is about 600 °F usually.Pass peaking exhaust duct 142 from the exhaust of peaking combustion gas turbine 130, this peaking exhaust duct will be exported product and be heated to about 1050 °F, and combustion gas itself is cooled to about 650 °F.The exhaust of peaking combustion gas turbine 130 is cooled to this temperature permission at normal temperature execution SCR, rather than carries out SCR at high temperature.In addition, owing in additional low-pressure superheater 136, added the heat output product, thereby reclaimed used heat from peaking circulation 104, so, improved the circulation and the peaking circuit net efficiency of uniting.
The output that replenishes low-pressure superheater 136 is provided to the low-pressure turbine entry nozzle.In an optional embodiment, shown in the dotted arrow of 144 marks, the output that replenishes low-pressure superheater 136 can be transferred to the not at the same level of low-pressure turbine, as instructing in U.S. Patent No. 6442924.
Fig. 2 has shown the example of the power generation system 200 that has being similar to of optional low pressure current 202 system shown in Figure 1.Optionally low pressure current 202 comprise water pump 204 and low pressure steam thermoregulator 206.Before introducing low-pressure turbine, optionally extra current 202 can be used for reducing the temperature of output product.For example, the temperature that enters the output product of low pressure steam thermoregulator 206 is about 1050 °F and leave in about 700-800 temperature.
By above description, the system that is appreciated that allows from peaking circulation recovered energy.Especially the low pressure steam that is used to combined cycle system is used subsequently from the exhaust of peaking turbo machine is overheated, thereby improves the efficient of combined cycle system.
Usually, the medium pressure steam temperature and the high pressure steam temperature of typical combined-cycle power generation plant are approximately 1050 °F.This make to use peaking heat extraction and make these steam overheated extraly become impossible.In one embodiment of the invention, allowing before high pressure steam passes additional high-pressure superheater part in the peaking circulating exhaust path, will be from the high pressure steam of combined cycle from about 1050 temperature adjustments to about 650 °F.This allows to use the high pressure steam with high hot merit transformation efficiency to reclaim peaking circulation heat extraction (temperature is about 1150).In addition, the optional LP steam-return line from combined cycle also is used for heat extraction is reduced to alap temperature.In a word, compare with the gain from the 35MW of former design, during peaking circular flow, this embodiment can allow the power output gain of extra 50MW.In addition, it is low equally with the desired temperature of combined cycle catalyzer that the temperature levels of catalyzer upstream can be held, to guarantee the efficient operation of catalyzer.
In addition, because recovered energy from exhaust, thereby it is in the temperature after the reduction, thus available normal temperature SCR catalyzer, rather than high temperature SCR catalyzer is handled.Foregoing description has been described and has only been made low pressure steam overheated.Certainly, according to embodiments of the invention, high pressure steam hereinafter described and medium pressure steam also can be overheated.Certainly, different embodiment according to the subject invention, the peaking exhaust can only make high pressure steam, medium pressure steam or both combinations overheated.That is, embodiments of the invention are devoted to make one or more overheated in low pressure steam, medium pressure steam and the high pressure steam with the peaking exhaust.
Fig. 3 has shown system 300 according to another embodiment of the invention.System comprises peaking circulation 302.System 300 will be called as combined cycle in this article by peaking circulation 302 remainders that comprise.
Peaking circulation 302 comprises compressor 303, burner 304 and combustion gas turbine 306.As mentioned above, combustion gas turbine 306 extracts energy from the hot air flow that burning produced of combustion gas or fuel.In one embodiment, the energy of extraction is converted into electric energy.Peaking circulation 302 also comprises output pipeline 308.Before exhaust is discharged into environment, the exhaust that output pipeline 308 is handled from combustion gas turbine 306.The processing of exhaust can be finished by SCR 314.In one embodiment, SCR 314 utilizes the constant temperature catalyzing agent, rather than high temperature catalyst.
Combined cycle can comprise compressor 320, and this compressor comprises suction port 321.Compressor 320 is connected to burner 322, combustion gas or fuel oil in this burner combustion pressurized air stream.Compressor 322 is connected to combustion gas turbine 324.Combustion gas turbine 324 extracts energy from the hot air flow that burning produced of combustion gas or fuel.In one embodiment, the energy of extraction is converted into electric energy.
The output of combustion gas turbine 324 is exhausts, and this exhaust can be used in other circulations of association system.Can use exhaust, for example, be used for the steam of high-pressure steam turbine machine 326 and pressure steam turbine 328 with heating.So combined cycle comprises HSRG 330.HSRG 330 can comprise low-pressure superheater 316 and high-pressure superheater 318.
The steam that passes high-pressure superheater 318 leaves in about 1050 temperature.The pre-thermoregulator 332 of high pressure mixes steam with water.In one embodiment, steam leaves the pre-thermoregulator 332 of high pressure in about 650 temperature.The pre-thermoregulator of high pressure 332 receives from the steam of the output of high-pressure superheater 318 with from the water of first pump 336.
The steam that passes low-pressure superheater 316 leaves in about 550 temperature.The pre-thermoregulator 334 of low pressure mixes steam with water.In one embodiment, steam leaves the pre-thermoregulator 334 of low pressure in about 350 temperature.The pre-thermoregulator of low pressure 334 receives from the steam of the output of low-pressure superheater 316 with from the water of second pump 338.The water that superheater 316 and superheater 318 are accepted from the 3rd pump 339.
The output of pre-thermoregulator 332 of high pressure and the pre-thermoregulator 334 of low pressure is all overheated in the output pipeline 308 of peaking circulation 302 then.Especially the output of the pre-thermoregulator 332 of high pressure is connected to the input that replenishes high-pressure superheater 312.In one embodiment, replenishing high-pressure superheater 312 makes the output of the pre-thermoregulator 332 of high pressure be superheated to about 1050 temperature.The output that replenishes high-pressure superheater 312 is connected to the input of high pressure/medium pressure steam turbo machine 340.
The output of the pre-thermoregulator 334 of low pressure is connected to the input that replenishes low-pressure superheater 310.In one embodiment, replenishing low-pressure superheater 310 makes the output of the pre-thermoregulator 334 of low pressure be superheated to about 600 temperature.The output that replenishes low-pressure superheater 310 is connected to the input of pressure steam turbine 342.Residual steam from high pressure/medium pressure steam turbo machine 340 and pressure steam turbine 342 is condensed in condenser 344, and the water that will wherein produce provides to pump 336, pump 338 and pump 339.
Fig. 4 has shown system 400 according to another embodiment of the invention.System comprises peaking circulation 402.System 400 will be called as combined cycle in this article by peaking circulation 402 remainders that comprise.
Peaking circulation 402 comprises compressor 403, burner 404 and combustion gas turbine 406.As mentioned above, combustion gas turbine 406 extracts energy from the hot air flow that burning produced of combustion gas or fuel.In one embodiment, the energy of extraction is converted into electric energy.Peaking circulation 402 also comprises output pipeline 408.Before exhaust is discharged into environment, the exhaust that output pipeline 408 is handled from combustion gas turbine 406.The processing of exhaust can be finished by SCR 414.In one embodiment, SCR 414 utilizes the constant temperature catalyzing agent, rather than high temperature catalyst.
Combined cycle can comprise compressor 420, and this compressor comprises suction port 421.Compressor 420 is connected to burner 422, combustion gas or fuel oil in this burner combustion pressurized air stream.Compressor 422 is connected to combustion gas turbine 424.Combustion gas turbine 424 extracts energy from the hot air flow that burning produced of combustion gas or fuel.In one embodiment, the energy of extraction is converted into electric energy.
The output of combustion gas turbine 424 is exhausts, and this exhaust can be used in other circulations of association system.Can use exhaust, for example, be used for the steam of medium pressure steam turbo machine 426 and pressure steam turbine 428 with heating.So combined cycle comprises HSRG 430.HSRG 430 can comprise low-pressure superheater 416 and middle pressure superheater 418.
Press the steam of superheater 418 to leave in passing in about 1050 temperature.The pre-thermoregulator 432 of middle pressure mixes steam with water.In one embodiment, steam is pressed pre-thermoregulator 432 in about 550 temperature is left.In press pre-thermoregulator 432 to accept from the steam of the output of middle pressure superheater 418 with from the water of first pump 436.
The steam that passes low-pressure superheater 416 leaves in about 600 temperature.The pre-thermoregulator 434 of low pressure mixes steam with water.In one embodiment, steam leaves the pre-thermoregulator 434 of low pressure in about 350 temperature.The pre-thermoregulator of low pressure 434 is accepted from the steam of the output of low-pressure superheater 416 with from the water of second pump 438.The water that superheater 416 and superheater 418 are accepted from the 3rd pump 439.
The output of middle pre-thermoregulator 432 of pressure and the pre-thermoregulator 434 of low pressure is all overheated in the output pipeline 408 of peaking circulation 402 then.Especially press the output of pre-thermoregulator 432 to be connected to the input that replenishes middle pressure superheater 412 in.In one embodiment, replenishing the middle superheater 412 of pressing makes the output of the pre-thermoregulator 432 of middle pressure be superheated to about 1050 temperature.The output of pressure superheater 412 is connected to the input of medium pressure steam turbo machine 440 in replenishing.
The output of the pre-thermoregulator 434 of low pressure is connected to the input that replenishes low-pressure superheater 410.In one embodiment, replenishing low-pressure superheater 410 makes the output of the pre-thermoregulator 434 of low pressure be superheated to about 600 temperature.The output that replenishes low-pressure superheater 410 is connected to the input of pressure steam turbine 442.Residual steam from medium pressure steam turbo machine 440 and pressure steam turbine 442 is condensed in condenser 444, and the water that will wherein produce provides to pump 436, pump 438 and pump 439.
Though only described the present invention in detail, should understand the present invention easily and be not limited to these disclosed embodiments in conjunction with the embodiment of limited quantity.On the contrary, the present invention can be revised, engaging any amount of modification, change, replacement or the equivalent arrangements of not describing up to now, but these match with main idea of the present invention and scope.In addition, though described various embodiment of the present invention, be appreciated that aspect of the present invention can only comprise the described embodiment of some of them.Therefore, the present invention should not be regarded as by foregoing description restriction, and only by the scope restriction of appended claim.
Claims (9)
1. power generation system, described system comprises:
First combustion gas turbine (324);
Heat recovery steam-driven generator (330) is connected to described first combustion gas turbine (320), and comprises the high-pressure superheater (318) with high pressure superheater output;
Second combustion gas turbine (306);
Output pipeline (314) is connected to described second combustion gas turbine;
Replenish high-pressure superheater (308), be arranged in described output pipeline (314), and heat is connected to described high pressure superheater output (318); And
Thermoregulator (322) is connected between described high pressure superheater output and the described additional high-pressure superheater.
2. system according to claim 1 is characterized in that, also comprises:
Be connected to the high-pressure steam turbine machine (340) of the output of described additional high-pressure superheater.
3. system according to claim 1 is characterized in that, described heat recovery steam-driven generator also comprises pressed the middle pressure superheater (418) of heat output in having, and also comprised:
Press superheater (410) in replenishing, be arranged in described output pipeline, and heat is connected to and pressed heat output in described.
4. system according to claim 3 is characterized in that, also comprises:
Be connected to the medium pressure steam turbo machine (440) of pressing the output of superheater in described the replenishing.
5. system according to claim 4 is characterized in that, also comprises:
Be connected in and pressed the middle thermoregulator (422) of pressing in heat output and described the replenishing between the superheater in described.
6. system according to claim 1 is characterized in that, described heat recovery steam-driven generator also comprises the low-pressure superheater (316) with low area overheat output, and also comprises:
Replenish low-pressure superheater (310), be arranged in described output pipeline, and heat is connected to described low area overheat output.
7. system according to claim 5 is characterized in that, also comprises:
Be connected to the high-pressure steam turbine machine (340) of the output of described additional high-pressure superheater.
8. system according to claim 1 is characterized in that, described output pipeline comprises selective catalytic reduction catalysts (314).
9. system according to claim 8 is characterized in that, described selective catalytic reduction catalysts is not the high-temperature selective catalytic reduction catalysts.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/354878 | 2009-01-16 | ||
| US12/354,878 US20100180567A1 (en) | 2009-01-16 | 2009-01-16 | Combined Power Augmentation System and Method |
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| Publication Number | Publication Date |
|---|---|
| CN101865000A true CN101865000A (en) | 2010-10-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010005132A Pending CN101865000A (en) | 2009-01-16 | 2010-01-14 | Combined power augmentation system and method |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20100180567A1 (en) |
| EP (1) | EP2423469A2 (en) |
| JP (1) | JP2010166805A (en) |
| CN (1) | CN101865000A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733870A (en) * | 2011-04-13 | 2012-10-17 | 通用电气公司 | Combined cycle power plant |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100263605A1 (en) * | 2009-04-17 | 2010-10-21 | Ajit Singh Sengar | Method and system for operating a steam generation facility |
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Also Published As
| Publication number | Publication date |
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| US20100180567A1 (en) | 2010-07-22 |
| JP2010166805A (en) | 2010-07-29 |
| EP2423469A2 (en) | 2012-02-29 |
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